all of a sudden my program just doesn't seem to work like it used to.[code]It searches the picture box for the color that you tell it to, and it moves and clicks the mouse at that pixel. Well... it used to do that, now it just locks up and won't respond for about 20 seconds.
View 1 RepliesI am using the BGW to run a long loop of several thousand records against several thousand records. If I open another form in the project then the process slows down dramatically, that is because in the Form I am opening has a DGV tied to Table that is being used in my loop process, so I understand why the process slows down.
What i am wondering and experimenting with is how to close the form and have the process resume to "Full Speed" if possible
I tried Closing the form verse Hiding it and DGV.DataSource = Nothing
Thinking that would unbind it?? and free up resources?
Problem:When my computer restarts my mapped drive appears under My Computer. When I try to use it from code I get errors. If I open the mapped drive by double clicking it, and then try the code, it works. What I discovered is that when my computer starts the status, using net use, is
[code]...
I just installed the .Net4 update from Windows update. (KB2416472) Date last published: 9/30/2010
Now when I boot up it takes almost a minute before apps loaded are usable, for example Avast virus shows its not in full protection mode, you can't access any apps I made that are in the tray, even the LAN is not active or in the tray, before the .Net4 update I could access these apps instantly. The update also adds another file to the running processes called mscorsvw.exe. (yeah more bloatware!)
I have a back-up image of my C: drive so I restored the image twice now and installed the .net4 update and see no difference, it still slows everything down on boot, on WinXP anyway, haven't tried it on my Win7 PC yet. Just curious if anyone else noticed any abnormalities with the .net4 update that was just released.
I wrote a small application (150kB) which controlls 2 comports, is sending and receiving messages from both sides and is able to write/read into a text file. My problem starts after I run the application for 2 hours or more. The PC starts to be really slow, it takes ages to even open a folder. What can be the reason? I understand, there might be something in the buffer; how can I clear the buffer from time to time.
View 4 RepliesHow do you share files from one computer to another that are connected in one wireless internet connection? I mean, it's possible using shared folders this means it could be possible in vb.net too..
View 1 RepliesI have a strange issue when using WindowsImpersonationContext.
Whenever I use Impersonation in a Windows Forms and the Main Form loses focus, all of the controls freeze up and their events are either not triggered or take too long to trigger. This only happens when I use LogonUserA with a user that is not the current[code]....
I'm using Visual studio 2008 and microsoft sapi in a forms application. I am using text to speech which works just fine however when the computer is speaking it "bricks" the application and the main ui is unresponsive until the computer is done talking then everything returns to normal. To counter this issue I tried using the background worker thread to establish the sapi on another thread however the form is still freezing when the computer speaks. I would like to note that at this point there is nothing on the form except a tabbed window and a few buttons the form is not performing any code what so ever other then the text to speech.
View 18 RepliesI found a strange issue with the combination of RichTextBox and RegEx.If I load a text file into a RichTextBox and use
Dim matches As MatchCollection = Regex.Matches(RichTextBox1.Text, "^H(.+ ){10}
", RegexOptions.Multiline Or RegexOptions.IgnoreCase)
then the RegEx will run blazing fast.OTOH if I load the text from a file straight into a string and feed this string with RegEx.Matches using
Dim FullText As String = New StreamReader("c:TempTextFile.txt", System.Text.Encoding.UTF8, True).ReadToEnd
Dim matches As MatchCollection = Regex.Matches(FullText, "^H(.+ ){10}
", RegexOptions.Multiline Or RegexOptions.IgnoreCase)
then the regex will run for ages.Now obviously the RichTextBox does something to the text. I found that loading the text into the RichTextBox will eliminate the first 4 bytes of the text (is that the byte order mark?). However, trimming those 4 characters with SubString won't solve the problem. RichTextBox does some other processing that I'm unaware of.I'm using RegEx both on client and server side (client can load text files into a RichTextBox to test and setup various RegEx's and the server will process text files according to these previously setup RegEx's). Needless to say that a regex will run blazing fast on the text file loaded into a RichTextBox, while the very same RegEx ran through the very same text file will seem to lock up the server side service.My question: what kind of text processing does the RichTextBox do and how can I mimic the behavior in a server-side process?
As a preface, I am brand new to using SQL Server 2005; I know how to use the SELECT, UPDATE, DELETE, and INSERT commands and that's about it. I am also using Express Edition on my local PC (E8400 processor, 8GB of DDR2-800, 2 x 640GB SATA-II HDD in RAID 1)
I have a table that I set up with 8 columns, all are NVARCHAR(Max) and I allow Null. I know in concept what a primary key is, but I don't have one (nor do I know how to set one up).
My VB.NET program that I'm working on is downloading a historical stock price chart from Yahoo, for every single ticker symbol in existence. The first 50,000 rows or so I added was super fast. Then I went to bed, and when I woke up it was still running - but the rate of row additions has slowed waaaaaay down; I noticed this around row 300,000. I always expected the rate of row addition to be constant over time, but obviously this is not so!
From browsing other Stack Overflow questions, I suspect my slow down is related to my piss-poor table setup. If this is the case, where should I begin first to fix this, and are there any good resources I could read up on to get started? I'm hoping this is something simple I can fix [code]....
I just finished working on my school vb project - breakout. As soon as i import background my ball speed slows down dramatically. I used 1.25mb bmp, 40kb jpg, and lower resolution copies of both but i get the same result. In my game i use bitmaps for bricks, platform and the ball along with a timer and draw e.graphics function. How can i illuminate the reduction of the speed of the ball when i add my background?
View 3 RepliesI've written a program which I propose to give a local club, which sadly may be'attractive' to pirates so I propose to build in some sort of anti-copying feature.My idea is to hide a file in a folder somewhere in the club's laptop, then on program start up I'll check to see if that file exists and if it's not there, which it's unlikely to be on a pirates machine, I'll flag up a message box saying that if they have a legitimate reason to install the program on a different machine they'll have to contact myself.By way of nuisance value, pressing the 'OK' button on the message box will cause the machine running, what I'm assuming is a pirated copy, to shut down.I've been looking at the VB.NET forum and MSDN for ideas as to how to achieve this and the general opinion seems to be:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Process.Start("shutdown", "-s")
[code].....
In my program I am trying to make a button that would add a shortcut to activate a running application by a process ID. In a form I have 2 text-boxes 1 for the name of the shortcut that would be shown in the tool-strip-menu-item. Then the other for the process name. Then when the user presses a button I would like the text of the text-box for the name to be added to a tool-strip-menu-item, then the other text-box used for the Process ID to be added to the fallowing code: (the tool-strip-menu-item is in another form)
Dim processID As Integer
processID = Shell("Process ID
", AppWinStyle.NormalFocus)
I wrote program that will send keystrokes to a computer if a button is pressed. The button is wired to a db9 connector and plugged into the pc. The program works, except I can not figure out how to detect if the cable gets unplugged. I am monitoring the CD pin change event to send keystrokes, but if the cable is not plugged in then I need it to send a messagebox.
View 8 RepliesI'm creating a CD that when inserted into a CD-Rom will AutoRun, which brings up the program starting with a splash screen, then the first window form. All this works, no problem. On the first window form I have a button (one of many) all buttons work (so far) except this one button. (I actually haven't test3d the buttonjs to see if they work on / from a CD yet, but they work in Debug).
I would like to have the user click the button, and have that button be tied to a zip file or an exe file that is in a folder on my CD, that will be downloaded to the user's computer. I would like the usual window to come up asking the user where the user would like to save the file, the user will choose the folder, click the save button and the file downloads from the CD to the hard drive of the user's computer, so the user can open it later. It doesn't have to Run from the CD, it is just to download to be accessed later.
Some files will be a Zip and others are Exe files that I would like to have downloaded to the user's PC by way of a button click. Of course the user's computer will need to be able to know which drive the CD is in.
This is what I've tried and doesn't seem to work...Have not tried it from directly from CD (Haven't tried anything directly from the CD as of yet, but after this problem my next step is try and make a AutoRun CD and test the program).
Process.Start(Application.StartupPath &
"SoftwareApp1.zip")
I'll start another post for How to Make my Program ready for a CD. I think it may involve Publishing...but publishing only made a setup.exe, which is Not what I want.
i am looking for a command to shutdown/restart my computer when i press a button. can anyone tell me the code?
View 25 RepliesI want to make a final project to the university there will be button when you clicked the computer will listen to you and print. what are you say in text box or in rich text box on the screen note: i'll start from zero i know nothing about this but i hope do this project or the project "save audio file in picture" but i like this one "computer listen to me". i'll use vb.net express 2008.
View 4 Repliesi developing my stock management system..in the welcome screen i want to put a enter button with a symbol as in computer keyboard.how can i get that symbol in button Text.
View 5 RepliesI wan't to make a button in my program that opens it when the computer starts up but how would I do that? I am using Visual Basic 2008 Express Edition.
View 4 RepliesI was wondering if there is any other way to make your computer press a button. Okay Right now i have this...
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Long) As Integer
1: counting button clicks and saving them to a variable and adding two. For example, if a button was clicked 10 times, the value of the variable would be 12.I would start with:Dim Buttoncount As IntegerButtoncount = ....This is the part i dont know. I would think it would be something like button1.click.numberofclicks or something, but i cant find anything that works
View 39 RepliesHow can I make a program so you click a button and select a File using a OpenFileDialog and click send on your computer and it will send the file to a different computer and then a SaveFileDialog will show asking where to save the file on the other computer. Oh ya I cant use WinSock or whatever becuase im using Windows Vista 64 Bit. I need it because I for some reason cant use printer sharing. It might be because im on A 64bit Vista Machine and I want to print a file off of a 32bit XP Home Machine.
View 6 Repliesi have a task to create a TCP Server (a program that is listening on its network card interfaces for incoming data stream).I have search on the internet and i found that i can use two methods : Socket or TCPListener class.I have created an example for Socket class, but i wondering how could i test it? I need to check that if another computer in the network send some string data to the listener computer , then this message should be displayed.Here is the example from microsoft that i am using for TCP Server using Socket:
Public Shared Sub Main()
' Data buffer for incoming data.
Dim data = nothingc[code]....
But it does not work because of the PORT setting.If in the TCP Server i have "Dim localEndPoint As New IPEndPoint(ipAddress, 0)" the client crashes, but if i change the port from any (0) to 11000 for example,the client works fine.Do you know why?
Later edit2:Maybe i should have started with this question:Which method is recommended for my scope?asynchronous or synchronous method ?
I am developing a computer application designed to monitor the network and CPU statistics on a computer remotely. The monitored computer would have my program installed and the monitoring computer would display, in a form, the information being sent from the remote client.The application does not send any information regarding packets, user names, passwords, etc. It is solely meant for monitoring CPU performance and Network resources remotely.
What would be the best method to send this information over to my host machine?I am programing in Visual Studio 2008 on windows XP. The client machine is also XP. I know this sounds a little shady, but it is required for my little business (http://www.iquorum.net) to monitor what and when something happens on our machines when I and my employees are away.
I am trying to dial a computer from another computer using Modem for sending files and messge.Follwoing is the code done in dialing computer
Text1.Text = "Test string from App1 "
Number$ = InputBox$("Enter phone number:", "Number$")
If Number$ = "" Then Exit Sub
Temp$ = Status
[code].....
But after the dial tone, i am getting the exception "CTL_E_GETNOTSUPPORTED " at the line MSComm1.Output = Text1.Text?
i have encountered a problem, i want to access the data coming to the computer from the in-built bluetooth module of a computer on windows platform, this data has been sent by a remote bluetooth module say a by an autonomous device (just like a bluetooth mouse connecting to the computer). The to be sent is in the form of numbers and i need these to manipulate on the computer.
View 6 RepliesI have a desktop computer with a cable connection on the back that allows me to watch TV on the computer using Windows Media Center. I had the idea of writing a program that would access this feed and send it to another computer (laptop) via my network. That way I would be able to watch TV from anywhere that my network spans. I have no idea if this is possible or how I would even do it,
So I have three questions.
1: Is it possible?
2: How would I go about access the feed?
3: How would I send it over the network?
My original thought was doing it in Flash, but I'm not very good at Flash so I wanted to do it in VB.Net.
I need to copy a file from a local computer to a remote computer on the network, if i try to use File.Copy without logon i get the following error:"Logon failure: unknown user name or bad password."How do I provide user name and password for file copy?
View 2 Replieshow can i look up for a specific computer given ip or computer name ...retrieve the user logged on..
View 2 RepliesI have to create an online application which i can apply it on every employee's computer in my company and i have create the application on visual basic 2008 and SQL 2005 using windows application and database. The problem is i do not understand how am i going to run the application on every employee's conputer. Because i have create the application on my computer, must i install SQL on every employee's computer? or any other software i have to used.
View 8 Replies